Vim has moved from Google Code to Github

If you previously had synced from the Mercurial repository on Google
Code, you can either just drop it and start using GitHub, or switch to
the Mercurial mirror. More info here: http://www.vim.org/movetogithub.php

Sorry, the section about moving to github and taking over your local
changes isn't filled in yet. Hopefully you can figure it out yourself,
or wait until someone provides the missing instructions. Discuss this
on the vim-dev maillist.

The Vim project on Google Code has been put in the "project moved"
state. Most things should redirect to the equivalent page on GitHub.
Works for issues, at least.